oorijzer

thumb|Frisian earizers from the period 1830–1870, . The Oorijzer (, ) is part of the Dutch folk costume for women, especially in the northern provinces of the Netherlands and in the province of Zeeland. It was originally part of the everyday attire of the Dutch before its adoption in the regional costumes.

Initially, the oorijzer was a metal bracket to keep a cap in place. It was worn over a bottom cap and a luxurious top cap or bonnet was fastened to it. Over time, the ear-iron grew into a showpiece. Decorated gold plates or curls protruded from the front of the oorijzers. Pins were used to attach the cap to the ear-iron.